Wrench.



, No MODEL.l

No. 746,590. PATENTED DEG. 8, 1903.

I. SHOOP.

WRENCH.

APPLICATION FILED APR. s. 190s.

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NITED STATES l Patented December 8, 1903.

` IRA SHOOP, OF MANORVILLE, PENNSYLVANIA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 746,590, dated December 8, 1903.

Application tied April s, 1903.l

To all whom, it may concern:

Be it knownthat I, IRA SHOOP, a citizen of; the United States of `America, residing at` Manorville, in the. county of Armstrong and State of Pennsylvania, have invented certain new and useful Improvements in Wrenches, of which the following is a specification, reference being had therein to the accompanying drawings;

This invention relates to certain new and useful improvements in wrenches, the object of the invention being to construct a monkeywrench with means whereby the movable jaw may be rapidly and easily adjusted whereby to conform to the different sizes of nuts on which the wrench is to be employed.

Briey described, the invention comprises, in connection with the wrench-shank carrying the rigid jaw atits outer end, a movable jaw formed integral with the casing, which is slidably mounted onthe wrenchshank and has its opposite side faces cut away, with the edges thereof dovetailed to receive the dovetailed edges of the side straps or arms of the yoke which straddles the casing and has connected theretov a lock-block provided with teeth for engagement with the teeth of the. wrench-shank. This lock-block is mounted in an opening provided therefor in the casing and is normally held in engagement with the teeth of the wrench-shank by means of the spring connected to the back of the movable jaw, all ofthe above construction being hereinafter more fully described,'and specifically pointed out in the claims.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this specification, andV wherein like numerals of reference indicate `like parts throughout the several views, in

detail perspective view of the locking-block. In the accompanying drawings, l'indicates serial No. 151,586. (No model.)

' the wrench-shank provided at its inner end with a suitable handle 2 and at its outer end with a rigid jaw 3, said shank being provided on its inner face with teeth 4. Mounted to slide upon this shank is a movable jaw 5, formed integral with the casing 6, which is provided with grooves 7 on its side faces near the rear end, the edges 8 of these groovesbeing dovetailed, as shown in Figs. 2 and 5. The casing 6 is cut away on its inner face to form a space 9, which receives the lockingblock l0, the edges thereof being dovetailed to t into dovetailed edges 11 of the cut-away portion 9. This locking-block is provided with teeth 12, which project into the opening 14 in the casing and engage with teeth 4t of the wrench-shank. Operating in the dovetailed groove 7 of the casing are the side arms or straps of the yoke 15, said arms or'straps being secured rigidly by bolts or screws to the block 10. The block l0 is normally held in locked engagement by means of a spring 16, secured rigidly near one end to the back of the movable jaw, as at 17, with its other end extending through in under the cross-bar of the yoke 15.

Inusing the wrench it is simply necessary in order to permit the adjustment of the jaw 5 toward the handle to apply pressure, which may be readily done by the thumb on the cross-bar of the yoke 15, which will force the locking-block 10 away from the shank and allow `the movable jaw to be slid toward the handle 2. The adjustment of the movable jaw toward the rigid jaw maybe accomplished by pressure against the rearend of the casing of the Vmovable jaw, as the teeth 12 will readily slip over the teethll.

It is to be noted that the construction is extremely simple, there being no delicate parts to become disarranged, while the movable jaw is firmly held in its adjusted position. 'Itwill be further noted that various slight changes may be made in the details of construction without departing from the general spirit of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In combination with a shank and fixed..

jaw thereof, a movable jaw mounted on said shank, said movable jaw being formed on its IOO sides with grooves and on its front faee with a cut-out portion having its upper and lower walls recessed, a yoke encircling said movable jaw and being received in the grooves thereof, a locking-block having dovetailed upper and lower faces mounted in the recesses of the cut-outlportion of said movable jaw, said locking-block being secured to said yoke, and a spring secured to rear face of said movable jaw and being bent outwardly therefrom and having its lower end engaging the inner face of said yoke.

2. In combination with a fixed jaw and the shank provided with a toothed face, a movable jaw having its sides formed with grooves of dovetailed cross-sectional contour and its front Wall formed with a cut-out portion having its upper and lower walls formed with re- In testimony whereof I aflix my signature,

in the presence of two witnesses.

IRA SHOOP.

Witnesses:

J. H. PAINTER, Gus A. WALKER. 

